Royal commentator Lady Colin Campbell has claimed that Prince Harry and Meghan Markle “are damaging to the commonwealth” after she released a book that “exposes” the duke and duchess. The book, which hit UK shelves on April 4, is described in its foreword as an “analysis of what happens when a vulnerable male” falls for an “ambitious doyenne”. Speaking to GB News, Lady C said: “I thought that it was about time that somebody nailed those two to the post. “I went through everything with a fine tooth comb and just absolutely nailed everything that they have done. “It is so irresponsible and so fa…